ok so i did a bit of research and i got this explanation.
http://answers.yahoo.com/question/index;_ylt=ArYYdpP07hjv3kNpSLR.klgjzKIX;_ylv=3?qid=20081130121636AASe5jg
however, my question now is, ok fine, it's got the 1000mph head boast, but isn't this figure irrelevant because once it's in...
ok so i still don't understand how a satellite being launched from west to east is easier, given that like you said, it's all based on the frame of reference, and the frame of reference is the Earth. In that, it doesn't actually matter to a static observer which velocity the satellite is going...
ok cool interesting...
one more question - why is the observable universe the same light years as the age of the universe? Wouldn't it be less? Given that if the light was emitted 13.7 billion years ago, but during that time the space in between has expanded, so shouldn't it in theory take...
but velocity is relative, and using your analogy, the train in this case is the earth. if you jumped on the train, you should be able to jump in any direction equally becuase your velocity is relative to the speed of the train. So even though you are jumping backwards, you're actually still...
mmm interesting... does that basically mean that everything in the universe has a natural inertia to repel from each other, and gravity is the counteracting force to keep them together.
Like if the universe had no matter, then it would just get bigger infinitely. And anyone from any point to...
if the universe is expanding faster than the speed of light, does that also mean the distance between the Earth and the Sun must also be expanding, if so at what rate?
The universe is around 13.5 to 14 billion years old. That means that if everything started from one singularity which was the big bang, and nothing can travel faster than the speed of light, the size of the universe must be at most 14 billion light years in size.
But even that is an extremely...